fun fact: non-nutritive sweeteners are not actually non-nutritive. Instead they are just types of sugar that are upwards of 2000x sweeter than normal table sugar. basically what happens is that because they are so much sweeter it takes far less of the actual compound to sweeten whatever you are eating. its like if you only ate a very small sliver of a steak instead of the whole thing, ultimate portion control, lol. there is also a similar approach with most non-stick calorie free cooking sprays. aerating the oil just makes the serving size incredibly small, which allows them to call it calorie and
fat free.
anyways, i remember reading a bit about some theories (not sure if there were any studies actually done yet) about how even though there may not be any
calories in "non-nutritive" sweeteners, the sweet taste still triggers some of our
body's functions, causing similar responses (such as releasing insulin) to normal sugar anyways. of course, releasing insulin causes changes in blood sugar levels, which affects
hunger, and (if i remember right) insulin is also linked to signaling
fat storage. insulin release without any actual increase in blood sugar could also cause your blood sugar to drop, which if taken far enough is even fatal.